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| 低碳高强钢氧化铁皮的形貌和熔化过程研究 |
| Morphology and melting process of oxide scale in a low-carbon high-strength steel |
| 投稿时间：2017-07-10 |
| DOI： |
| 中文关键词: 氧化铁皮 低碳高强钢 Fe2SiO4 FeO 形貌 熔化过程 熔点 磷含量 |
| 英文关键词: oxide scale low-carbon high-strength steel Fe2SiO4 FeO morphology melting process melting point P content |
| 基金项目:国家自然科学基金面上项目(51274154);湖北省科技创新专项重大项目(2017000011);武汉科技大学研究生短期国外交流资助项目. |
| 作者 | 单位 | E-mail | | 袁清 | 1. 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北 武汉,430081
2. 武汉科技大学国际钢铁研究院,湖北 武汉,430081 | 438137485@qq.com | | 徐光 | 1. 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北 武汉,430081
2. 武汉科技大学国际钢铁研究院,湖北 武汉,430081 | | | 周明星 | 1. 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北 武汉,430081
2. 武汉科技大学国际钢铁研究院,湖北 武汉,430081 | |
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| 中文摘要: |
| 将一种低碳高强钢试样在热轧带钢厂的工业加热炉中随炉加热,采用电子背散射衍射(EBSD)与能谱仪(EDS)观察并分析所研究钢种氧化铁皮的组成结构及形貌,采用激光共聚焦显微镜(LSCM)观察氧化铁皮的熔化过程。结果表明,氧化铁皮最内层为共晶化合物Fe2SiO4/FeO,FeO在Fe2SiO4/FeO区域有两种分布形态,一种是以相互平行的片层状分布,另一种是以点状或颗粒状弥散分布于Fe2SiO4中；靠近铁基体处的弥散颗粒中除了包含Fe2SiO4成分外,还有磷酸盐化合物；添加P元素可以降低Fe2SiO4/FeO的熔化温度,当实验钢中w(P)=0.06%时,Fe2SiO4的实际熔点为1101.3 ℃,明显低于其理论熔点。 |
| 英文摘要: |
| A low-carbon high-strength steel sample was heated in the industrial furnace at a hot-rolled strip plant. The composition and morphology of the oxide scale were observed and analyzed by using electron backscattered diffraction (EBSD) and energy dispersive spectrometer (EDS). The oxide scale’s melting process was also observed by laser scanning confocal microscope (LSCM). The results show that the inner layer of the scale mainly includes Fe2SiO4/FeO eutectic compound, and FeO has two kinds of distribution patterns in Fe2SiO4/FeO region. The one is that FeO separates out from Fe2SiO4/FeO in the form of paralleled lamella; the other is granular dispersive distribution. The dispersive particles near the iron matrix contain phosphate compounds besides Fe2SiO4. Moreover, the addition of P element can lower the melting temperature of Fe2SiO4/FeO. As P content of the tested steel equals 0.06 wt.%, the actual melting point of Fe2SiO4 is 1101.3 ℃, which is obviously lower than its theoretical melting point. |
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